The sides of the HD cage consists of three pieces of .125-inch thick 1x1.5-inch u-channel held together with some threaded bolts. The cage will be bolted to the frame of the case via some .5-inch angle.

Another requirement for this case is the ability to mount six SSD drives. The original plan was to mount them to the bottom of the case, but if there ever was a leak in the water cooling system, all of the SSDs would be toast. So instead, I came up with the idea to mount the drives to the underside of a motherboard tray.

I attached the .1-inch thick side and front panels with 6 stainless steel flat head socket cap screws. The front panel extends past the tops of the side panels by .10-inch in order to hide the top's front edge.

The process to attach the panels is:

Drill pilot holes along the edges of the panel

Clamp the panel to frame and use the pilot holes to drill tap holes into the frame

Remove the panel and tap the frame holes

Countersink the panel holes

The side panels extend past the top of the frame by the thickness of the hinge. These will later be scribed and cut to length along the back of the case.